
Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-
induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S.
Government’s Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in this chart.
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high
Duration Per Day | Sound Level dBA, | Typical |
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In Hours | Slow Response | Example |
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8 | 90 | Duo in small club |
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6 | 92 |
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4 | 95 | Subway Train |
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3 | 97 |
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2 | 100 | Very loud classical music |
| The SWA1501 | ||
1.5 | 102 |
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| can produce a | ||
1 | 105 | Patrice screaming at Ron about deadlines |
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maximum SPL of | ||||||
0.5 | 110 |
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| 128 dB @ 1m | ||||
0.25 or less | 115 | Loudest parts at a rock concert |
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INTRODUCTION
Thank you for choosing Mackie Designs’ active sound reinforcement speaker systems.
The SWA1501 is a high output active subwoofer system. It features a
Connecting and setting up the SWA1501 is a breeze. It accepts a stereo or mono
Mackie Designs M•1400i and C300s. A Phase switch gives you the option of reversing the polarity of the signal to the subwoofer by 180º. A Subwoofer Level control allows you to adjust the balance between the subwoofer and the full- range speakers.
The
The cabinet is constructed with 15mm thick
Don’t forget to visit our website at www.mackie.com
for more information about this and other Mackie products.
Part No. 030068 Rev. B 01/03 | 3 |
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©2003 Mackie Designs Inc. All Rights Reserved. |
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